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Issues with coordinate system transformations post and replies

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Issue with transforming between reference frames
Peter Smith
3 Posts

Hi all,

I have been having an issue with Tracker regarding transforming between reference frames. In an activity, a student tracks the motion of two objects (A and B) and is asked to view the motion of B wrt A or vice versa. The coordinate system tracks along just fine but the data do not update for the change of reference frame.

I did not have this issue in previous installations, as the data seemed to update automatically (more or less). So, I'm wondering if this is a bug or if there is an extra step that I'm missing here. Would appreciate any help I can get here!

Cheers,

Peter


Replies to Issue with transforming between reference frames

Re: Issue with transforming between reference frames -
Douglas Brown Avatar
Douglas Brown
416 Posts

Hi Peter, thanks for reporting this. I can reproduce it so I must have introduced it in the last release :-(  I'll make sure it is fixed in the next. In the meantime I think if you click on one of the track's steps to select it, the track data will update. Please let me know if this works for you.  Doug


> I have been having an issue with Tracker
> regarding transforming between reference frames. In
> an activity, a student tracks the motion of two objects
> (A and B) and is asked to view the motion of B wrt
> A or vice versa. The coordinate system tracks along
> just fine but the data do not update for the change
> of reference frame.
>
> I did not have this issue in
> previous installations, as the data seemed to update
> automatically (more or less). So, I'm wondering if
> this is a bug or if there is an extra step that I'm
> missing here. Would appreciate any help I can get here
>
>
> Cheers,
>
> Peter



Re: Issue with transforming between reference frames -
Peter Smith
3 Posts

Hi Douglas,

I just downloaded the most recent version of Tracker and tried this out. Yes, this fix works like a charm. Thanks so much for the help!

Cheers,

Peter



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